- Sep 1 German troops land on Taman peninsula
- Sep 1 US Federal judge upholds detention of Japanese-Americans
- Sep 2 German troops enter Stalingrad
- Sep 4 Transport #28 departs with French Jews to nazi-Germany
- Sep 5 American sailor Charles J. French (22) swims for over six hours in waters near Guadalcanal while towing a life raft with fifteen survivors from his US Navy ship which was sunk by Japanese gunfire [1]
- Sep 5 Battle at Alam Halfa ends
- Sep 5 British & US bomb Le Havre & Bremen
- Sep 6 Czech marathon runner Oskar Hêks transported to Auschwitz-Birkenau
- Sep 7 First flight of the Consolidated B-32 Dominator
- Sep 7 German occupiers take silver anniversary coins in battle
- Sep 7 Transport #29 departs with French Jews to nazi-Germany
- Sep 7 US National Championship Men's Tennis, Forest Hills, NY: American Ted Schroeder wins his first of 2 Grand Slam events; beats countryman Frank Parker 8-6, 7-5, 3-6, 4-6, 6-2
US Open Women's Tennis
Sep 7 US National Championship Women's Tennis, Forest Hills, NY: Pauline Betz beats fellow American Louise Brough Clapp 4-6, 6-1, 6-4 for her first of 3 straight US singles titles
Five on a Treasure Island
Sep 11 Enid Blyton publishes "Five on a Treasure Island" first of her "Famous Five" children's novels, start of one of the best-selling children's series ever with over 100 million sold
- Sep 11 Transport #31 departs with French Jews to Nazi Germany
- Sep 12 Battle of Edson's Ridge begins at Guadalcanal
- Sep 12 Free-Poland & Belgium asks pope to condemn nazi-war crimes
- Sep 13 Battle of Edson's Ridge (2nd Japanese assault) at Guadalcanal
- Sep 13 Cubs shortstop Leonard Merullo makes 4 errors in 1 inning
- Sep 13 German forces attack Stalingrad
- Sep 14 Battle of Edson's Ridge (Japanese assault) at Guadalcanal
- Sep 14 German troops occupy train station Stalingrad-1
1st Medal of Honor of WWII
Sep 14 US Navy Admiral Chester Nimitz presents the 1st Medal of Honor of WWII, for courage and valor beyond the call of duty during the attack on Pearl Harbor, to sailor John William Finn; ceremony took place in Pearl Harbor aboard USS Enterprise
- Sep 14 Yanks clinch pennant #13
- Sep 15 US aircraft carrier Wasp torpedoed at Guadalcanal
- Sep 16 Japanese attack on Port Moresby, Papua New Guinea, repelled
- Sep 18 Canadian Broadcasting Corporation authorized for radio service
- Sep 18 The order for "extermination of asocials through labour" is approved by Nazi Minister of Justice, Otto Thierack
- Sep 20 Gunther Hagg becomes world champ of all records from 1500m to 5000m
- Sep 21 116 hostages executed by Nazis in Paris
- Sep 21 Transport #35 departs with French Jews to nazi-Germany
- Sep 23 Soviet counter offensive at Stalingrad
- Sep 23 Transport #36 departs with French Jews to nazi-Germany
Glenn Miller's Orchestra
Sep 27 Glenn Miller and his Orchestra give their final performance at Central Theater in Passaic, New Jersey; Miller disbanded the group as he joined the US Army
- Sep 27 Heavy German assault in Stalingrad
- Sep 27 NY Giants beat Wash Redskins 14-7 without making a 1st down
- Sep 27 St Louis Cards win NL pennant on last day of season
- Sep 28 Luftwaffe bombs Stalingrad
- Sep 28 NY Americans NHL team folded
- Sep 29 32°F lowest temperature ever recorded in Cleveland, Ohio in September
- Sep 29 French Government in exile of De Gaulle cancels agreement of Munich
Nimitz Finds Guadalcanal
Sep 30 Admiral Chester Nimitz's B-17 finds Guadalcanal using a National Geographic map
- Sep 30 SS exterminates 3,500 Jews in Zelov Lodz Poland in 6 week period
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